Rare earth aluminates and gallates supported rhodium catalysts for catalytic partial oxidation of hydrocarbons

a technology of rhodium catalyst and rare earth aluminates, which is applied in the direction of metal/metal-oxide/metal-hydroxide catalyst, combustible gas purification/modification, chemical production, etc., can solve the problems of catalyst deactivation, reaction that is simply too slow and/or efficient to be economical, and uneconomical at best and ineffective at worst, so as to improve the composition of the catalys

Inactive Publication Date: 2006-02-21
PHILLIPS 66 CO
View PDF24 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]The present invention is directed towards improved catalyst compositions, as well as methods of making and using such compositions. In particular, preferred embodiments of the present invention comprise rare earth catalyst supports, catalyst compositions having rare earth supports, and methods of preparing and using the catalysts and supports. Accordingly, the present invention also encompasses an improved method

Problems solved by technology

Many industrial/commercial processes involve reactions that are simply too slow and/or efficient to be economical without a catalyst present.
After a period of time in operation, a catalyst will become deactivated, losing its effectiveness for enhancing the desired reaction to a degree that makes it uneconomical at best and inoperative at worst.
However, replacing a catalyst typically means discarding the deactivated catalyst.
A discarded catalyst represents a loss of expensive metals.
However, the recovery process involves dissolving the multi-component catalyst and subsequent separation of the active components from the mixed solution.
The chemistry is complex and costly, more importantly, it involves bulk amount

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rare earth aluminates and gallates supported rhodium catalysts for catalytic partial oxidation of hydrocarbons
  • Rare earth aluminates and gallates supported rhodium catalysts for catalytic partial oxidation of hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034]A rare earth (La) modified support material was prepared using a standard incipient wetness technique. 20 g of alpha alumina (30–50 mesh) was impregnated with an aqueous solution of La(NO3)3. The impregnated material was then dried in an oven at 100° C. overnight. The support material was further calcined at 1050° C. in air for 2 hours to allow the solid-state reaction between the alumina and lanthanum nitrate to take place. After calcination, the composition was found to be 6.40 wt % LaAlO3 on Al2O3.

example 2

[0035]A rare earth (Sm) modified support material was prepared using a standard incipient wetness technique. 20 g of alpha alumina (30–50 mesh) impregnated with an aqueous solution of Sm(NO3)3. The impregnated material was then dried in an oven at 100° C. overnight. The support material was further calcined at 1050° C. in air for 2 hours to allow the solid-state reaction between the alumina and samarium nitrate to take place. After calcination, the composition was found to be 6.79 wt % SmAlO3 on Al2O3.

example 3

[0036]Catalyst A was prepared from the rare earth modified support material in Example 1. The catalyst was prepared by incipient wetness impregnation of the LaAlO3 / Al2O3 particulate support material with a aqueous solution of rhodium chloride hydrate (RhCl3.xH2O. The nominal loading for Rh was 4% by weight. The rhodium impregnated modified support was dried at 100° C. overnight and then calcined at 600° C. in air for 3 hours. The calcined catalyst precursor was then reduced in a tube furnace under a flow of 300 ml / 300 ml H2 / N2 at 500° C. for 3 hours prior to catalytic testing.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Temperatureaaaaaaaaaa
Fractionaaaaaaaaaa
Temperatureaaaaaaaaaa
Login to view more

Abstract

The present invention relates to improved catalyst compositions, as well as methods of making and using such compositions. In particular, preferred embodiments of the present invention comprise rare earth catalyst supports, catalyst compositions having rare earth supports, and methods of preparing and using the catalysts and supports. Accordingly, the present invention also encompasses an improved method for converting a hydrocarbon containing gas and an oxygen containing gas to a gas mixture comprising hydrogen and carbon monoxide, i.e., syngas, using the rare earth catalyst supports in accordance with the present invention. In addition, the present invention contemplates an improved method for converting hydrocarbon gas to liquid hydrocarbons using the novel syngas catalyst supports and compositions described herein.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]Not applicable.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.FIELD OF THE INVENTION[0003]The present invention generally relates to catalysts and processes for the catalytic conversion of hydrocarbons (e.g., natural gas) using rare earth based catalysts to produce carbon monoxide and hydrogen (synthesis gas). More particularly, the invention relates to such catalysts and their manner of making, and to processes employing the catalysts for production of synthesis gas.BACKGROUND OF THE INVENTION[0004]Catalysis is the basis for many industrial / commercial processes in the world today. The most important aspect of a catalyst is that it can increase the productivity, efficiency and profitability of the overall process by enhancing the speed, activity and / or selectivity of a given reaction. Many industrial / commercial processes involve reactions that are simply too slow and / or efficient to be economical witho...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J23/00B01J8/00C01B31/18C07C27/00B01J23/63B01J23/83B01J35/00B01J37/02C01B3/38C01B3/40C01B32/40C10G2/00
CPCB01J23/002B01J37/0207C01B3/386C01B3/40C10G2/32B01J23/63Y10S502/525B01J23/83B01J35/002B01J2523/00C01B2203/0261C01B2203/062C01B2203/1047C01B2203/1064C01B2203/1082C01B2203/1241B01J2523/31B01J2523/3737B01J2523/3706Y02P20/52
Inventor JIN, YAMINGNIU, TIANYANWRIGHT, HAROLD A.
Owner PHILLIPS 66 CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap